Alert archive / South Dakota / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in South Dakota, 2021

475 severe thunderstorm warnings in 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.

Severe Thunderstorm Warnings by county

Each county as a circle sized by its count in 2021. Tap one for its archive.

Severe Thunderstorm Warnings: 475
Busiest month: August205 severe thunderstorm warnings
Busiest day: June 11, 202140 severe thunderstorm warnings

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

328 of 475 severe thunderstorm warnings covering South Dakota in 2021 had a qualifying storm report inside them; 536 of 688 hail, wind and damage reports fell inside a warning, on average 22 minutes after it went out.

South Dakota, 2021

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Severe thunderstorm warnings	475	328	31%	688	78%	22 min

Each office's whole area, 2021

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Aberdeen, SD: severe thunderstorm warnings	170	101	41%	220	76%	20 min
NWS Sioux Falls, SD: severe thunderstorm warnings	176	117	34%	292	85%	20 min
NWS Rapid City, SD: severe thunderstorm warnings	212	171	19%	380	79%	26 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

The alerts

Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Counties	Lasted
Apr 5, 7:03 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha	27 min
Apr 5, 7:39 PM CDT	Severe Thunderstorm Warning	FSD	Moody	36 min
Apr 5, 7:49 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, Turner	26 min
Apr 5, 8:44 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	31 min
Apr 5, 9:04 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha, Turner	26 min
Apr 5, 9:27 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	33 min
Apr 5, 9:48 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	27 min
Apr 6, 9:39 AM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	10 min
Apr 26, 8:29 PM CDT	Severe Thunderstorm Warning	UNR	Custer	27 min
May 19, 8:17 PM CDT	Severe Thunderstorm Warning	UNR	Meade	33 min
May 20, 11:58 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Pennington	47 min
May 21, 12:41 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Pennington, Ziebach	49 min
May 21, 1:27 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	41 min
May 21, 2:33 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley, Sully	42 min
May 21, 6:44 PM CDT	Severe Thunderstorm Warning	UNR	Oglala Lakota	27 min
May 21, 9:42 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Pennington	31 min
May 23, 4:53 PM CDT	Severe Thunderstorm Warning	UNR	Custer	37 min
May 23, 5:26 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Lawrence, Meade, Pennington	49 min
May 23, 5:26 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade, Pennington	33 min
May 23, 6:04 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade, Pennington	30 min
May 23, 6:53 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Pennington, Ziebach	67 min
May 23, 7:45 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Ziebach	58 min
May 23, 7:59 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	46 min
May 23, 9:58 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	47 min
May 23, 10:04 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hughes, Lyman	41 min
May 23, 10:14 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Faulk, Hand, Hughes, Hyde, Lyman and 2 more	46 min
May 23, 10:17 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix, Gregory	43 min
May 23, 10:46 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Faulk, Hand, Hyde, Potter, Sully	44 min
May 23, 11:30 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, Faulk, McPherson, Walworth	45 min
May 24, 12:11 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, McPherson, Marshall, Spink	49 min
May 24, 7:32 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	43 min
Jun 7, 5:36 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Pennington	54 min
Jun 7, 6:02 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, McPherson	43 min
Jun 7, 7:34 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson	56 min
Jun 7, 8:26 PM CDT	Severe Thunderstorm Warning	ABR	Campbell	49 min
Jun 8, 3:20 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Pennington	55 min
Jun 8, 4:45 PM CDT	Severe Thunderstorm Warning	ABR	Corson	45 min
Jun 8, 5:33 PM CDT	Severe Thunderstorm Warning	ABR	Corson	42 min
Jun 8, 5:46 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	44 min
Jun 8, 5:54 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	66 min
Jun 8, 6:23 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	52 min
Jun 8, 6:54 PM CDT	Severe Thunderstorm Warning	ABR	Corson	51 min
Jun 8, 7:17 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	43 min
Jun 8, 8:11 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	49 min
Jun 8, 8:25 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	50 min
Jun 8, 8:46 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Pennington	59 min
Jun 8, 8:48 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Lawrence, Meade	57 min
Jun 8, 8:59 PM CDT	Severe Thunderstorm Warning	UNR	Ziebach	47 min
Jun 8, 9:20 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	55 min
Jun 8, 9:28 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	47 min
Jun 8, 9:41 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	64 min
Jun 8, 9:44 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Lawrence, Meade	61 min
Jun 8, 10:10 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	29 min
Jun 8, 10:12 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	36 min
Jun 8, 11:50 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Perkins, Ziebach	55 min
Jun 8, 11:54 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	66 min
Jun 9, 12:58 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Jones, Stanley	37 min
Jun 10, 8:44 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Lawrence, Meade	61 min
Jun 10, 9:38 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade, Perkins	67 min
Jun 10, 9:44 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Lawrence, Meade	46 min
Jun 10, 10:02 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding, Perkins	43 min
Jun 10, 10:23 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota	67 min
Jun 10, 10:29 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade, Perkins	61 min
Jun 10, 10:42 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	78 min
Jun 10, 10:49 PM CDT	Severe Thunderstorm Warning	UNR	Fall River, Oglala Lakota	41 min
Jun 10, 11:05 PM CDT	Severe Thunderstorm Warning	UNR	Meade	40 min
Jun 10, 11:06 PM CDT	Severe Thunderstorm Warning	ABR	Corson	39 min
Jun 10, 11:18 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Meade, Pennington	57 min
Jun 10, 11:24 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	51 min
Jun 10, 11:30 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade	45 min
Jun 10, 11:32 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Oglala Lakota, Pennington	43 min
Jun 10, 11:44 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Perkins, Ziebach	76 min
Jun 11, 12:05 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Pennington, Ziebach	70 min
Jun 11, 12:12 AM CDT	Severe Thunderstorm Warning	UNR	Bennett, Haakon, Jackson, Mellette, Oglala Lakota, Pennington	63 min
Jun 11, 12:57 AM CDT	Severe Thunderstorm Warning	UNR	Ziebach	33 min
Jun 11, 1:02 AM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	43 min
Jun 11, 1:15 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Jones, Stanley	45 min
Jun 11, 1:15 AM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Mellette, Todd	60 min
Jun 11, 1:18 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	22 min
Jun 11, 2:14 AM CDT	Severe Thunderstorm Warning	UNR	Bennett, Mellette, Todd, Tripp	91 min
Jun 11, 2:37 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, McPherson, Potter, Walworth	38 min
Jun 11, 2:54 AM CDT	Severe Thunderstorm Warning	ABR	Faulk, Potter, Sully	36 min
Jun 11, 3:13 AM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix, Gregory	47 min
Jun 11, 3:16 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, Faulk, McPherson, Potter, Walworth	44 min
Jun 11, 3:23 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Spink	52 min
Jun 11, 3:26 AM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld	64 min
Jun 11, 3:38 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Edmunds, Faulk, McPherson, Marshall and 1 more	52 min
Jun 11, 3:39 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Charles Mix, Douglas, Gregory	51 min
Jun 11, 4:16 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Clark, Codington, Day, Grant, Marshall and 2 more	44 min
Jun 11, 4:49 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Grant, Hamlin, Spink	41 min
Jun 11, 4:59 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix	46 min
Jun 11, 5:02 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Day, Deuel, Grant, Marshall and 1 more	43 min
Jun 11, 5:04 AM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Miner	41 min
Jun 11, 5:35 AM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Hamlin	40 min
Jun 11, 5:41 AM CDT	Severe Thunderstorm Warning	FSD	Yankton	34 min
Jun 11, 5:49 AM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant, Roberts	33 min
Jun 11, 5:56 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	49 min
Jun 13, 8:58 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Todd	62 min
Jun 13, 10:24 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	29 min
Jun 13, 11:10 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	35 min
Jun 13, 11:33 PM CDT	Severe Thunderstorm Warning	ABR	Jones	27 min
Jun 13, 11:44 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	31 min
Jun 13, 11:53 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	37 min
Jun 13, 11:58 PM CDT	Severe Thunderstorm Warning	ABR	Jones	32 min
Jun 14, 12:23 AM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	38 min
Jun 14, 12:30 AM CDT	Severe Thunderstorm Warning	ABR	Jones	45 min
Jun 14, 1:35 AM CDT	Severe Thunderstorm Warning	FSD	Beadle, Kingsbury	25 min
Jun 14, 3:53 AM CDT	Severe Thunderstorm Warning	FSD	Kingsbury	37 min
Jun 15, 12:01 AM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	44 min
Jun 15, 12:45 AM CDT	Severe Thunderstorm Warning	UNR	Custer	32 min
Jun 15, 2:33 AM CDT	Severe Thunderstorm Warning	UNR	Fall River	34 min
Jun 15, 3:49 AM CDT	Severe Thunderstorm Warning	UNR	Pennington	56 min
Jun 15, 4:25 AM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota	32 min
Jun 15, 5:32 AM CDT	Severe Thunderstorm Warning	UNR	Fall River, Oglala Lakota	54 min
Jun 19, 5:42 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Lawrence, Meade	63 min
Jun 19, 6:11 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade	64 min
Jun 19, 6:35 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade	40 min
Jun 19, 6:53 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	32 min
Jun 19, 7:10 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	65 min
Jun 19, 7:57 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	30 min
Jun 19, 8:48 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	57 min
Jun 19, 9:06 PM CDT	Severe Thunderstorm Warning	UNR	Jackson, Pennington	54 min
Jun 23, 6:58 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	32 min
Jun 23, 7:12 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	46 min
Jun 23, 7:46 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Douglas, Hutchinson	44 min
Jun 23, 8:05 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Charles Mix, Douglas	40 min
Jun 23, 8:20 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Clay, Davison, Douglas, Hanson and 3 more	55 min
Jun 23, 8:30 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	31 min
Jun 23, 8:36 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Douglas, Hutchinson	18 min
Jun 24, 6:30 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	16 min
Jul 3, 1:44 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	35 min
Jul 3, 2:59 PM CDT	Severe Thunderstorm Warning	UNR	Custer	48 min
Jul 3, 5:33 PM CDT	Severe Thunderstorm Warning	UNR	Jackson	57 min
Jul 3, 5:36 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Stanley	39 min
Jul 3, 5:58 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson	62 min
Jul 3, 6:10 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Stanley	50 min
Jul 3, 6:35 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey, Potter, Walworth	40 min
Jul 3, 6:56 PM CDT	Severe Thunderstorm Warning	UNR	Bennett	79 min
Jul 3, 6:57 PM CDT	Severe Thunderstorm Warning	ABR	Jones	33 min
Jul 3, 7:14 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Walworth	31 min
Jul 3, 7:34 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Walworth	18 min
Jul 3, 8:12 PM CDT	Severe Thunderstorm Warning	UNR	Bennett	44 min
Jul 5, 12:14 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley, Sully	46 min
Jul 5, 1:50 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	40 min
Jul 5, 2:30 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	30 min
Jul 5, 3:17 PM CDT	Severe Thunderstorm Warning	FSD	Brule	30 min
Jul 5, 5:00 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, Turner	29 min
Jul 5, 5:54 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	36 min
Jul 5, 6:12 PM CDT	Severe Thunderstorm Warning	UNR	Harding, Perkins	41 min
Jul 5, 6:15 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha	45 min
Jul 5, 6:19 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	56 min
Jul 5, 6:37 PM CDT	Severe Thunderstorm Warning	FSD	Lake, Lincoln, Minnehaha, Turner	38 min
Jul 5, 7:11 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	64 min
Jul 5, 7:16 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha, Moody	44 min
Jul 6, 12:54 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Turner, Yankton	51 min
Jul 6, 1:05 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Yankton	25 min
Jul 6, 1:14 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Turner, Yankton	31 min
Jul 6, 6:08 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding, Perkins	67 min
Jul 6, 6:58 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade, Perkins	60 min
Jul 6, 8:51 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding	54 min
Jul 8, 4:36 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade	54 min
Jul 8, 5:29 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade	61 min
Jul 8, 6:26 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Meade, Pennington	64 min
Jul 8, 6:30 PM CDT	Severe Thunderstorm Warning	UNR	Harding, Perkins	26 min
Jul 8, 7:14 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Jackson, Oglala Lakota, Pennington	61 min
Jul 8, 7:39 PM CDT	Severe Thunderstorm Warning	UNR	Harding, Perkins	66 min
Jul 8, 7:58 PM CDT	Severe Thunderstorm Warning	UNR	Perkins, Ziebach	47 min
Jul 8, 8:10 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Oglala Lakota	65 min
Jul 8, 8:42 PM CDT	Severe Thunderstorm Warning	UNR	Perkins, Ziebach	63 min
Jul 8, 8:43 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	62 min
Jul 8, 9:32 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	58 min
Jul 8, 9:34 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Perkins, Ziebach	56 min
Jul 8, 9:35 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	26 min
Jul 8, 10:28 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Ziebach	62 min
Jul 8, 10:30 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	24 min
Jul 8, 10:45 PM CDT	Severe Thunderstorm Warning	ABR	Corson	45 min
Jul 8, 10:53 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Hutchinson, Turner, Yankton	52 min
Jul 8, 10:56 PM CDT	Severe Thunderstorm Warning	FSD	Yankton	19 min
Jul 8, 11:11 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Yankton	34 min
Jul 8, 11:21 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Hutchinson, Lincoln, Turner, Yankton	39 min
Jul 8, 11:22 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	53 min
Jul 8, 11:25 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Mellette	65 min
Jul 8, 11:50 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	40 min
Jul 8, 11:59 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Turner, Union	46 min
Jul 9, 12:20 AM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd	40 min
Jul 9, 12:44 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	46 min
Jul 9, 12:46 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	44 min
Jul 9, 1:22 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Jerauld, Sanborn	38 min
Jul 9, 2:15 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	45 min
Jul 9, 2:34 AM CDT	Severe Thunderstorm Warning	FSD	Hanson, Lake, McCook, Miner	41 min
Jul 9, 4:17 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Sully	27 min
Jul 9, 4:57 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	12 min
Jul 9, 6:41 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota	28 min
Jul 9, 8:25 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	35 min
Jul 9, 8:57 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	63 min
Jul 9, 9:10 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	50 min
Jul 13, 9:25 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Lawrence	50 min
Jul 13, 10:12 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Lawrence, Meade	63 min
Jul 13, 10:58 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Lawrence, Meade, Pennington	62 min
Jul 13, 11:56 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	51 min
Jul 16, 4:55 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Pennington	65 min
Jul 16, 5:32 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	58 min
Jul 16, 6:05 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	45 min
Jul 16, 6:31 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Oglala Lakota, Pennington	44 min
Jul 16, 7:10 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Oglala Lakota	65 min
Jul 16, 7:20 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Oglala Lakota, Pennington	55 min
Jul 16, 8:12 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Oglala Lakota	48 min
Jul 16, 8:18 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Mellette	57 min
Jul 17, 6:34 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	41 min
Jul 17, 7:10 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	35 min
Jul 17, 7:34 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	56 min
Jul 17, 8:41 PM CDT	Severe Thunderstorm Warning	UNR	Harding	52 min
Jul 21, 1:47 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	31 min
Jul 22, 4:33 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding	57 min
Jul 22, 5:01 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding, Perkins	59 min
Jul 22, 5:48 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade, Perkins	57 min
Jul 22, 6:41 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Perkins, Ziebach	79 min
Jul 22, 6:44 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	61 min
Jul 22, 7:45 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	60 min
Jul 23, 6:25 PM CDT	Severe Thunderstorm Warning	UNR	Harding, Perkins	44 min
Jul 23, 7:23 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	40 min
Jul 23, 8:14 PM CDT	Severe Thunderstorm Warning	ABR	Corson	46 min
Jul 23, 8:15 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	30 min
Jul 23, 9:06 PM CDT	Severe Thunderstorm Warning	FSD	Kingsbury	39 min
Jul 23, 9:11 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Hanson	49 min
Jul 23, 9:15 PM CDT	Severe Thunderstorm Warning	FSD	Kingsbury	30 min
Jul 23, 9:47 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, McPherson	43 min
Jul 23, 10:29 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, McPherson	46 min
Jul 23, 10:31 PM CDT	Severe Thunderstorm Warning	ABR	Brown, McPherson	44 min
Jul 23, 10:42 PM CDT	Severe Thunderstorm Warning	ABR	Day, Marshall, Roberts	33 min
Jul 23, 10:54 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, Potter, Sully, Walworth	51 min
Jul 23, 11:13 PM CDT	Severe Thunderstorm Warning	ABR	Roberts	35 min
Jul 23, 11:17 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Marshall	30 min
Jul 24, 12:43 AM CDT	Severe Thunderstorm Warning	ABR	Roberts	47 min
Jul 25, 5:37 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley	14 min
Jul 25, 5:55 PM CDT	Severe Thunderstorm Warning	ABR	Jones	50 min
Jul 25, 6:03 PM CDT	Severe Thunderstorm Warning	ABR	Hughes	29 min
Jul 25, 6:20 PM CDT	Severe Thunderstorm Warning	ABR	Hand, Hyde	40 min
Jul 25, 6:24 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Hyde	51 min
Jul 25, 6:41 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley	25 min
Jul 25, 6:43 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	22 min
Jul 25, 7:03 PM CDT	Severe Thunderstorm Warning	ABR	Hand, Hyde	42 min
Jul 25, 7:19 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	26 min
Jul 25, 7:29 PM CDT	Severe Thunderstorm Warning	UNR	Mellette	61 min
Jul 25, 7:30 PM CDT	Severe Thunderstorm Warning	ABR	Hand	36 min
Jul 25, 8:11 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Spink	49 min
Jul 25, 8:54 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington	51 min
Jul 26, 4:05 AM CDT	Severe Thunderstorm Warning	ABR	Corson	28 min
Jul 26, 9:43 AM CDT	Severe Thunderstorm Warning	ABR	Walworth	32 min
Aug 5, 3:30 PM CDT	Severe Thunderstorm Warning	ABR	Deuel	45 min
Aug 5, 7:00 PM CDT	Severe Thunderstorm Warning	FSD	Lake, Moody	45 min
Aug 5, 7:28 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Moody	32 min
Aug 5, 7:44 PM CDT	Severe Thunderstorm Warning	FSD	Moody	33 min
Aug 5, 7:58 PM CDT	Severe Thunderstorm Warning	FSD	Lake, Minnehaha, Moody	47 min
Aug 5, 8:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Minnehaha, Moody	51 min
Aug 5, 8:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Lincoln, Minnehaha	48 min
Aug 5, 9:04 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	28 min
Aug 5, 10:04 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, McCook, Minnehaha, Turner	41 min
Aug 5, 10:36 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Turner, Union	39 min
Aug 5, 11:40 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	50 min
Aug 6, 12:10 AM CDT	Severe Thunderstorm Warning	FSD	Union	35 min
Aug 6, 1:06 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln	39 min
Aug 6, 1:36 AM CDT	Severe Thunderstorm Warning	FSD	Union	24 min
Aug 6, 3:24 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	36 min
Aug 6, 5:36 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding	33 min
Aug 6, 5:53 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	67 min
Aug 6, 6:53 PM CDT	Severe Thunderstorm Warning	UNR	Fall River, Oglala Lakota	67 min
Aug 6, 7:53 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Oglala Lakota	67 min
Aug 6, 8:06 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Meade, Oglala Lakota, Pennington	54 min
Aug 6, 8:56 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Mellette, Todd	64 min
Aug 6, 9:30 PM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd, Tripp	75 min
Aug 6, 10:42 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	34 min
Aug 6, 11:07 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Lyman	38 min
Aug 6, 11:10 PM CDT	Severe Thunderstorm Warning	FSD	Brule	35 min
Aug 6, 11:29 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hyde, Lyman	46 min
Aug 7, 12:10 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Faulk, Hand, Hyde, Spink	50 min
Aug 7, 6:39 PM CDT	Severe Thunderstorm Warning	ABR	Brown, McPherson	51 min
Aug 7, 7:05 PM CDT	Severe Thunderstorm Warning	ABR	Brown, McPherson	40 min
Aug 7, 7:26 PM CDT	Severe Thunderstorm Warning	ABR	Brown	49 min
Aug 7, 11:01 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Spink	44 min
Aug 7, 11:25 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Clark, Day, Spink	50 min
Aug 8, 12:56 AM CDT	Severe Thunderstorm Warning	ABR	Clark	49 min
Aug 14, 1:45 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	45 min
Aug 14, 2:28 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	47 min
Aug 14, 2:57 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	48 min
Aug 14, 3:06 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	23 min
Aug 14, 3:37 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	53 min
Aug 14, 3:44 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	41 min
Aug 14, 4:05 PM CDT	Severe Thunderstorm Warning	UNR	Meade	40 min
Aug 14, 4:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Custer	66 min
Aug 14, 4:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Meade, Pennington	60 min
Aug 14, 5:04 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	56 min
Aug 14, 5:40 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Pennington	31 min
Aug 14, 6:34 PM CDT	Severe Thunderstorm Warning	UNR	Mellette	41 min
Aug 14, 6:47 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Walworth	43 min
Aug 14, 6:56 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	34 min
Aug 14, 7:12 PM CDT	Severe Thunderstorm Warning	UNR	Mellette	33 min
Aug 14, 7:29 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter	46 min
Aug 14, 8:15 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter	60 min
Aug 14, 8:48 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley, Sully	42 min
Aug 19, 6:26 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Perkins, Ziebach	79 min
Aug 19, 8:26 PM CDT	Severe Thunderstorm Warning	ABR	Corson	34 min
Aug 22, 4:19 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, Potter	41 min
Aug 22, 4:33 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Edmunds, McPherson	42 min
Aug 22, 5:03 PM CDT	Severe Thunderstorm Warning	ABR	McPherson	13 min
Aug 22, 5:15 PM CDT	Severe Thunderstorm Warning	FSD	Brule	45 min
Aug 22, 5:21 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds	39 min
Aug 22, 5:25 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo	37 min
Aug 22, 5:40 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Brown	50 min
Aug 22, 5:48 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Jerauld	42 min
Aug 22, 6:11 PM CDT	Severe Thunderstorm Warning	ABR	Brown	49 min
Aug 22, 6:14 PM CDT	Severe Thunderstorm Warning Destructive damage threat	ABR	Day, Marshall	46 min
Aug 22, 6:23 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Aurora, Jerauld	40 min
Aug 22, 6:27 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Spink	48 min
Aug 22, 6:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Day, Marshall, Roberts	24 min
Aug 22, 7:15 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Davison, Hanson, Miner, Sanborn	30 min
Aug 22, 7:17 PM CDT	Severe Thunderstorm Warning	ABR	Day	43 min
Aug 22, 7:21 PM CDT	Severe Thunderstorm Warning	FSD	Aurora	24 min
Aug 22, 7:31 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Davison, Sanborn	44 min
Aug 22, 8:06 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Davison, Hanson, Miner, Sanborn	39 min
Aug 22, 8:32 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook	43 min
Aug 23, 3:45 PM CDT	Severe Thunderstorm Warning	UNR	Jackson, Mellette	24 min
Aug 23, 4:13 PM CDT	Severe Thunderstorm Warning	ABR	Jones	27 min
Aug 23, 5:01 PM CDT	Severe Thunderstorm Warning	UNR	Mellette	59 min
Aug 23, 5:07 PM CDT	Severe Thunderstorm Warning	ABR	Jones	38 min
Aug 23, 5:21 PM CDT	Severe Thunderstorm Warning	UNR	Todd	29 min
Aug 23, 5:55 PM CDT	Severe Thunderstorm Warning	UNR	Mellette	65 min
Aug 23, 6:15 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	60 min
Aug 23, 6:17 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Butte, Harding, Perkins	58 min
Aug 23, 6:42 PM CDT	Severe Thunderstorm Warning	UNR	Ziebach	33 min
Aug 23, 7:12 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	48 min
Aug 23, 8:42 PM CDT	Severe Thunderstorm Warning	ABR	Corson	48 min
Aug 23, 9:13 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	47 min
Aug 23, 10:01 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Walworth	59 min
Aug 23, 10:17 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Walworth	43 min
Aug 23, 10:56 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Walworth	64 min
Aug 23, 11:51 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Faulk, Potter	54 min
Aug 24, 12:01 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, McPherson	59 min
Aug 24, 12:56 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Brown, Day, Marshall	64 min
Aug 24, 1:05 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, Faulk, Hand, Spink	55 min
Aug 25, 3:39 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix	36 min
Aug 26, 1:35 AM CDT	Severe Thunderstorm Warning	UNR	Harding	55 min
Aug 26, 3:18 AM CDT	Severe Thunderstorm Warning	UNR	Perkins	42 min
Aug 26, 3:47 AM CDT	Severe Thunderstorm Warning	ABR	Corson	58 min
Aug 26, 4:44 AM CDT	Severe Thunderstorm Warning	ABR	Corson	46 min
Aug 26, 4:58 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Yankton	27 min
Aug 26, 7:47 AM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand	43 min
Aug 26, 8:01 AM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Hyde	44 min
Aug 26, 8:11 AM CDT	Severe Thunderstorm Warning	ABR	Faulk, Spink	49 min
Aug 26, 8:18 AM CDT	Severe Thunderstorm Warning	ABR	Day, Marshall, Roberts	57 min
Aug 26, 8:24 AM CDT	Severe Thunderstorm Warning	ABR	Hand, Spink	36 min
Aug 26, 8:45 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Spink	45 min
Aug 26, 9:14 AM CDT	Severe Thunderstorm Warning	ABR	Roberts	46 min
Aug 26, 9:18 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Beadle, Kingsbury	57 min
Aug 26, 9:22 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Hamlin, Spink	38 min
Aug 26, 9:26 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Hamlin	49 min
Aug 26, 9:57 AM CDT	Severe Thunderstorm Warning	ABR	Grant, Roberts	33 min
Aug 26, 9:58 AM CDT	Severe Thunderstorm Warning	ABR	Deuel, Hamlin	62 min
Aug 26, 10:00 AM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant, Hamlin	60 min
Aug 26, 10:01 AM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Miner, Moody	59 min
Aug 26, 10:39 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Brookings	66 min
Aug 26, 2:37 PM CDT	Severe Thunderstorm Warning	ABR	Roberts	23 min
Aug 26, 6:21 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	54 min
Aug 26, 6:59 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	61 min
Aug 26, 7:54 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Custer, Pennington	66 min
Aug 26, 8:48 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Custer, Pennington	57 min
Aug 26, 9:38 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	52 min
Aug 26, 11:05 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, Turner, Yankton	25 min
Aug 26, 11:31 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Ziebach	59 min
Aug 27, 12:05 AM CDT	Severe Thunderstorm Warning	ABR	Stanley	55 min
Aug 27, 12:08 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Clay, Lincoln, Turner, Union	37 min
Aug 27, 12:17 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln	28 min
Aug 27, 12:34 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Lincoln, Union	41 min
Aug 27, 1:06 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley, Sully	39 min
Aug 27, 1:44 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Hyde, Potter, Sully	46 min
Aug 27, 5:27 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding	78 min
Aug 27, 6:39 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Butte, Meade, Perkins	96 min
Aug 27, 8:14 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Perkins, Ziebach	46 min
Aug 28, 1:14 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Walworth	31 min
Aug 28, 1:44 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, McPherson, Walworth	46 min
Aug 28, 2:05 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Walworth	40 min
Aug 28, 2:39 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Edmunds, Walworth	66 min
Aug 28, 3:19 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, McPherson	26 min
Aug 28, 3:42 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Edmunds	47 min
Aug 28, 4:12 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Brown, Spink	63 min
Aug 28, 4:51 AM CDT	Severe Thunderstorm Warning	ABR	Dewey	39 min
Aug 28, 5:10 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Brown, Clark, Codington, Day, Spink	65 min
Aug 28, 6:08 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Potter, Walworth	37 min
Aug 28, 6:15 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Codington, Day, Grant	60 min
Aug 28, 6:55 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk	35 min
Aug 28, 7:01 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Grant	44 min
Aug 28, 7:09 AM CDT	Severe Thunderstorm Warning	ABR	Brown	16 min
Aug 28, 7:24 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds	36 min
Aug 28, 7:43 AM CDT	Severe Thunderstorm Warning	ABR	Grant, Roberts	30 min
Aug 28, 8:26 AM CDT	Severe Thunderstorm Warning	ABR	Day, Grant, Roberts	30 min
Aug 28, 8:42 AM CDT	Severe Thunderstorm Warning	ABR	Codington, Grant, Roberts	33 min
Aug 28, 9:14 AM CDT	Severe Thunderstorm Warning	ABR	Grant, Roberts	31 min
Aug 28, 9:31 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Grant, Roberts	44 min
Aug 28, 3:21 PM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook, Miner, Minnehaha, Moody	24 min
Aug 28, 3:56 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Turner, Yankton	49 min
Aug 28, 4:23 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Lincoln, Turner	37 min
Aug 28, 4:33 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	42 min
Aug 28, 5:00 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Lincoln, Minnehaha	45 min
Aug 28, 6:14 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, Lake, McCook	31 min
Aug 28, 6:15 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	45 min
Aug 28, 6:17 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, McCook, Turner	43 min
Aug 28, 6:44 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Lake, McCook, Miner, Sanborn	46 min
Aug 28, 6:44 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	46 min
Aug 28, 6:48 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, Lake, McCook, Minnehaha	42 min
Aug 28, 6:53 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	52 min
Aug 28, 7:23 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Lincoln	52 min
Aug 28, 7:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Hanson, Lake, McCook, Miner, Minnehaha, Moody	50 min
Aug 28, 7:27 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Hutchinson, Turner, Yankton	48 min
Aug 28, 7:48 PM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook, Minnehaha, Moody, Turner	31 min
Aug 28, 7:50 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Clay, Hutchinson, Lincoln, Turner, Yankton	40 min
Aug 28, 8:52 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	23 min
Aug 28, 9:13 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	47 min
Aug 30, 3:59 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	61 min
Aug 30, 4:19 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Hutchinson	56 min
Aug 30, 4:34 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	56 min
Aug 30, 4:54 PM CDT	Severe Thunderstorm Warning	ABR	Corson	51 min
Aug 30, 5:09 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	66 min
Aug 30, 5:25 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, Turner	35 min
Aug 30, 5:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Perkins	61 min
Aug 30, 5:30 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, Hutchinson, McCook	30 min
Aug 30, 5:44 PM CDT	Severe Thunderstorm Warning	ABR	Corson	46 min
Aug 30, 5:58 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Custer	62 min
Aug 30, 5:59 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, Turner, Yankton	23 min
Aug 30, 6:06 PM CDT	Severe Thunderstorm Warning Destructive damage threat	UNR	Perkins, Ziebach	54 min
Aug 30, 6:45 PM CDT	Severe Thunderstorm Warning Destructive damage threat	UNR	Meade, Perkins, Ziebach	60 min
Aug 30, 6:50 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Custer, Fall River, Oglala Lakota	36 min
Aug 30, 6:53 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Perkins	67 min
Aug 30, 7:29 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	46 min
Aug 30, 7:42 PM CDT	Severe Thunderstorm Warning Destructive damage threat	UNR	Meade, Perkins, Ziebach	63 min
Aug 30, 7:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Perkins	64 min
Aug 30, 7:57 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, McCook, Minnehaha, Turner	48 min
Aug 30, 8:41 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Haakon, Meade, Ziebach	64 min
Aug 30, 9:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Meade, Pennington	60 min
Aug 30, 9:40 PM CDT	Severe Thunderstorm Warning	UNR	Ziebach	40 min
Aug 30, 9:46 PM CDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Haakon, Ziebach	59 min
Aug 30, 10:08 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Perkins	35 min
Aug 30, 10:26 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Pennington	64 min
Aug 30, 11:10 PM CDT	Severe Thunderstorm Warning	ABR	Jones	25 min
Aug 30, 11:14 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Lyman	20 min
Aug 30, 11:19 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld, Sanborn	41 min
Aug 31, 12:05 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Douglas	40 min
Aug 31, 12:15 AM CDT	Severe Thunderstorm Warning	FSD	Hanson, Hutchinson	45 min
Aug 31, 12:29 AM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Mellette, Todd	61 min
Aug 31, 12:33 AM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	42 min
Aug 31, 1:02 AM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd, Tripp	58 min
Aug 31, 1:19 AM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd, Tripp	56 min
Aug 31, 1:26 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Gregory	49 min
Aug 31, 1:57 AM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd, Tripp	63 min
Aug 31, 2:14 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix	31 min
Sep 13, 9:10 AM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	23 min
Sep 16, 10:20 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	25 min
Sep 16, 11:31 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Hutchinson, Yankton	29 min
Sep 17, 12:10 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Brookings, Lake, McCook, Minnehaha, Moody	35 min
Sep 17, 12:29 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Turner, Union, Yankton	46 min
Sep 17, 12:34 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Minnehaha	56 min
Sep 17, 12:36 AM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Lincoln, Minnehaha	54 min
Sep 17, 1:11 AM CDT	Severe Thunderstorm Warning	FSD	Union	49 min
Sep 19, 10:09 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	51 min
Oct 9, 12:05 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	27 min
Oct 9, 3:39 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Beadle, Brule, Jerauld	51 min
Oct 9, 4:23 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld, Kingsbury, Sanborn	52 min
Oct 9, 4:33 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Clark, Codington, Day, Hamlin, Spink	42 min
Oct 9, 5:08 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Kingsbury	52 min
Oct 9, 5:18 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Clark, Codington, Day, Grant, Hamlin and 2 more	57 min
Oct 9, 5:53 PM CDT	Severe Thunderstorm Warning	FSD	Kingsbury	27 min
Oct 9, 6:15 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Day, Deuel, Grant, Hamlin, Marshall and 1 more	60 min
Oct 9, 7:17 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant, Hamlin, Roberts	43 min
Oct 9, 8:24 PM CDT	Severe Thunderstorm Warning	ABR	Hamlin	33 min
Dec 15, 3:23 PM CST	Severe Thunderstorm Warning Considerable damage threat	FSD	Union	67 min
Dec 15, 4:26 PM CST	Severe Thunderstorm Warning Considerable damage threat	FSD	Union	34 min

By county

Every county with at least one alert. A county page lists each alert that covered it.

26 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2020 2022

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.